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2020-2025 GM HD STAGE 1-3" leveling kit

SKU: SMX-20251
5.0 / 3 reviews
MSRP: $1154.98
$1099.98

Quantity

SuspensionMAXX stage 1 leveling system for your 2020 -2025 GM HD trucks
Installation Guide

2020& Up  Stage 1 leveling kit

SuspensionMAXX stage 1 leveling system for your 2020-2025 Chevrolet Silverado GMC Sierra 2500HD 3500HD trucks. The Stage 1 kit Includes a patented SuspensionMAXX  MAXX Cam leveling kit and our MAXX travel upper control arms. Allowing for up to 3" of lift and tires sizes up to 35"ALL TERRAIN TIRES on 2020 -2025 GM HD trucks.  

Kit includes

  • Differential spacers and Skidplate spacers to maintain the proper driveline angles.
  • Shock Extensions to reuse your factory length shock absorbers
  • Maxx Cam 9 Patented adjustable torsion bar keys
  • Maxx travel Upper Control Arms

Why Choose Suspension MAXX for your 2020-2025 Chevy Silverado 2500HD 3500HD  & GMC Sierra 2500HD 3500HD trucks?

We offer the most complete leveling kit available for your Chevy Silverado 2500HD, 3500HD & GMC Sierra 2500HD, 3500HD trucks.  Using the highest quality American Made parts that will ensure your truck stands the test of time. We back our leveling kits with our MAXX structural lifetime warranty.  The Suspension MAXX  maxx cam 9 torsion bar key is manufactured from 4140 investment cast, heat-treated American made Steel! We include CNC’d aluminum differential spacers and Hardened 10.9-grade fasteners to ensure your front drive axles maintain proper driveline angles. Every component down to our shock extensions are precision machined, zinc coated. We include these extensions with our kit ensuring your shocks are not overextended. Longer shock studs are included to allow you to fasten your factory wire harness in place. Last but not least, the MAXX travel control arms, designed to give you increased ride height while maintaining proper suspension geometry and travel. Some may ask why changing the control arms are necessary. We have designed our control arms to compliment the leveled ride height. The factory control arms are flat across all three mounting points and as you lift your truck, the ball joint angle is increased.  At the same time, the upper control arm loses clearance to the suspension limiting bump stop that is located under the front of the upper A-arm.  Our hand fabricated, TIG welded control arms feature improved clearance to this bump stop. The MAXX travel will allow you to lift your truck up to 3” from stock while maintaining a satisfactory ride.  Our control arms are had fabricated from 0.188 wall 1-3/4” tubing, powder-coated finish and utilize greaseable MOOG ball joints for trouble-free operation for thousands of miles.  If you desire the best kit for your HD Silverado or Sierra and you value quality American made craftsmanship, look no further than SuspensionMAXX for the most complete 3-inch leveling kit on the market.

 

SuspensionMAXX stage 1 leveling system for your 2020 -2025 GM HD trucks
SMX-20251
Front
2.5"-3"
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Return Policy

If you wish to return your SuspensionMAXX product please contact us by phone or email. Fill out the Return Form Bellow and mail it back with your return. You must notify us within 90 days of receiving your shipment. Non-warranty returns are subject to a 15% restocking fee, and all shipping charges are nonrefundable. Items must be in new condition (No Exceptions), any cosmetic wear or damage from improper packaging in return shipping will increase the restocking fee to 25%. You are responsible for the return shipping cost and insurance fee (if desired). Our staff will inspect returned products, and issue credit promptly. No returns after 90 days from date of delivery. If you have ordered the wrong item by mistake, we do offer exchanges at no additional charge within 90 days.

SuspensionMAXX, Inc.
1692 Marquette Ave
Bay City, MI 48706

Contact information
Phone 1-888-629-9226
Info@suspenisonmaxx.com

Return & Exchange Form

Product Reviews

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SuspensionMAXX Stage 1 – Hands Down a wonderful Upgrade for My 2025 SierraLet me start with this—I've turned a wrench or two in my life, and it's rare to find a kit that delivers on every promise, but SuspensionMAXX knocked it out of the park with their Stage 1 leveling system for my 2025 GMC Sierra 2500HD.First things first—THE INSTRUCTIONS. I’ve never seen such clear, thoughtful, and actually useful documentation. Every step was laid out logically, with detailed photos, torque specs, and notes where it actually mattered. These weren’t generic “figure it out” diagrams—they were written by folks who clearly install what they build. Add in top-tier customer support that picks up the phone and actually knows your truck? That alone is worth a standing ovation.But here’s what really blew me away:I didn’t think a torsion bar suspension could ride this good. Period.After installing the MAXX Cam 9 adjustable torsion keys, the MAXX travel control arms, and their included diff drop and shock extensions, my Sierra rides smoother than stock, with way more front-end authority. Zero binding. No harsh rebound. Just planted, confident handling—even with 35s.I was worried the differential drop and skid plate spacers would be a pain. Nope. Everything fit like factory, and all the hardware was grade 10.9 and top quality. Nothing sketchy, nothing janky.This kit isn’t just “complete”—it’s engineered.Every component, from the TIG-welded, American-made control arms to the CNC’d spacers and zinc-coated shock extensions, screams craftsmanship. This isn’t your average cookie-cutter lift kit—it’s a well-thought-out, precision-leveling system built for real-world use. The MOOG ball joints and proper bump stop clearance alone show SuspensionMAXX thought through the geometry like suspension should be done.Bottom line: If you want the cleanest, strongest, best-riding 3” leveling kit for your 2020–2025 Silverado or Sierra HD, this is it. No regrets. No compromises. No weird clunks or mystery ride issues. Just damn good parts, a better ride, and a truck that sits like it should’ve from the factory.Proud to run American-made gear like this.Well done, SuspensionMAXX. Y’all earned a customer for life.
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Absolutely phenomenal leveling kit for GMC trucks. Detailed install instructions were precise and simple to understand all parts fit together perfectly and the ride quality is great! I highly recommend this leveling kit. Personally I paired it with the FOX 2.5’s which I also highly recommend. If you’re in the market for a leveling kit check out suspension maxx you won’t be disappointed. Kyle N. Las Vegas,Nv
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This is the 2nd kit I've bought from Suspension Maxx. 1st was on my 2015 GMD 2500HD. This kit went on my 2020 GMC 3500HD and was the only kit I even considered. Installation was painless with both the instructions and the video to help guide. Looks and rides amazing and keep getting compliments every where I go. Another amazing product from Suspension Maxx!!!
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